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GENOTYPE ENVIRONMENT INTERACTION IN MUNGBEAN

MUHAMMAD ZUBAIR AND ABDUL GHAFOOR

Abstract: Twelve genotypes of mungbean (No. 7-2, NCM 201, NCM 209, No. 1, NCM 205, AEM 6/20, NM 18, AEM 30/20, NM 93, NM 90, NM 121-25, M 20-24) were evaluated for stability of grain yield under seven diverse environments of Pakistan. The interaction between the genotypes and environments (G X E interaction) was used as an index to determine the yield stability of genotypes under all the environments. The G X E interaction was highly significant and both linear as well as non-linear components were equally important for determining the yield stability. The genotype "NM 90" gave the highest yield with above average regression value and non-significant standard deviation, showing consistently better performance in favorable environments. The genotype "NCM 209" also had high mean yield over the environments and did extremely well under less favorable conditions. The genotypes "No.1" and "NM 18" responded well under favorable conditions as compared to unfavorable conditions. The genotypes "NCM 201", "M 20-24" and "AEM 30/20" had below average yield, whereas their stability parameters revealed above average stability with specific adaptation to unfavorable environments.
 

Pulses Programme, National Agricultural Research Center, Islamabad, Pakistan.
Plant Genetic Resources Institute (PGRI), National Agricultural Research Centre (NARC), Islamabad, Pakistan.